Unlocalised language names

[jonorthwash]

The following language codes should be showing up with their native names if not localised into another language, but they're not:

• cat_iec2017 - català (IEC 2017) (265d523)
• cat_valencia - valencià (265d523)
• eng_US - English (US) (9c78647)
• fra_eco
• hbs_BS
• hbs_HR
• hbs_SR
• mlt_translit
• nno_e
• oci_aran - aranés
• oci_gascon - gascon
• pan_Arab
• pan_Guru
• por_BR - português brasileiro
• por_PTpre1990
• sma_Mid
• sma_North
• alt - алтайча (9c78647)
• ava - Магӏарул мацӏ (327182a)
• bas
• byv - Mə̀dʉ̂mbɑ̀ (867018a)
• btc
• bua - буряад (29152cb)
• cro - Apsáalooke (327182a)
• csb
• dlg - дулҕан (df8ed85)
• evn - Эвэды̄ турэ̄н (dd68986)
• fkv - kvääni
• frp - arpitan
• gld - Нанай (dd68986)
• kbd - адыгэбзэ (327182a)
• khk - монгол (халх) (9c78647)
• kik - Gĩkũyũ (cb976f6)
• kjh - хакас тілі (9c78647)
• kmr
• kol
• kpv
• krl - varšinaiskarjala (648453a)
• liv - livõ (c369d43)
• mdf
• mvf - ᠮᠣᠩᠭᠣᠯ (df8ed85)
• nap
• olo - livvinkarjala (648453a)
• pcd - picard (327182a)
• pus
• qve
• scn
• sco
• sjo - ᠰᡳᠪᡝ ᡤᡳᠰᡠᠨ (dd68986)
• srd - sardu (265d523)
• ssp
• szl
• tet
• tki - توركمانجه (cb976f6)
• tlh -  
• udm
• vro - võru (82413a0, c369d43)
• wad - Wamesa (df8ed85)
• wad-ipa - Wamesa (IPA) (df8ed85)
• wal - Wolaytta (df8ed85)
• yaq - Yoem Noki (df8ed85)
• zlm

The following exist already as two-letter codes (see #153):

• lvs (lv)
• lin (ln)
• zlm (ms)

[hectoralos]

A few native names:
cat_valencia - valencià
frp - arpitan
oci_aran - aranés
oci_gascon - gascon
por_BR - português brasileiro
srd - sardu

[flammie]

Here's some more if still missing

• fkv

kvääni

• kpv
• mdf
• udm

@rueter @nikopartanen

• tlh

tlhIngan Hol
 

[jonorthwash]

oci_aran - aranés
oci_gascon - gascon

@hectoralos, should these (or any of the others) have a language name with the variety in parentheses, or are the forms you provide sufficient and clear (and findable from a big list?) on their own?

[hectoralos]

@jonorthwash, gascon is for sure enough, like Valencian for the Southern varieties of the language usually known as Catalan. And I think aranés too.

By the way (a bit off-topic) I want to add the tokens for the Arpitan version of the interface, but I'm not sure in which file should be added the names of the languages and, eventually, the names of the varieties. Where should I add them?